http://bugs.winehq.org/show_bug.cgi?id=14392
--- Comment #2 from Brian Croom brian.s.croom@gmail.com 2008-07-09 15:17:17 --- In both cases it is the same entry in winecfg, type CD-ROM, pointed to ~/.wine/isomount. Apparently Wine is detecting the drive type in some other way? See /dlls/kernel32/volume.c:550 or so. The code is sadly a bit overwhelming for me, without having had any experience hacking on it, otherwise I might be able to understand the issue better.